+ <table frame="topbot" rowsep="0" colsep="0" role="grammar">
+ <title>qstring</title>
+ <tgroup cols="4">
+ <tbody>
+ <row>
+ <entry id="grammar.qstring">&qstring;</entry>
+ <entry>::=</entry>
+ <entry><emphasis role="bold">"</emphasis><emphasis>〈〈any sequence of characters excluded "〉〉</emphasis><emphasis role="bold">"</emphasis></entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>